73229282640 has 120 divisors (see below), whose sum is σ = 245994398208. Its totient is φ = 19522563840.

The previous prime is 73229282597. The next prime is 73229282641. The reversal of 73229282640 is 4628292237.

73229282640 is a `hidden beast` number, since 7 + 322 + 9 + 282 + 6 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73229282641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3190405 + ... + 3213275.

Almost surely, 2^73229282640 is an apocalyptic number.

It is an amenable number.

73229282640 is an abundant number, since it is smaller than the sum of its proper divisors (172765115568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73229282640 is a wasteful number, since it uses less digits than its factorization.

73229282640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27337 (or 27328 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 73229282640 in words is "seventy-three billion, two hundred twenty-nine million, two hundred eighty-two thousand, six hundred forty".